Comment

Comment by Bob Campbell on April 12, 2012 at 10:40am

I may have to correct what I just said. Your PH test does not seem to match any of the colors very well. You may need to use the Wide Range test to determine which scale is correct.

Comment by Bob Campbell on April 12, 2012 at 10:35am

But ph? ph hard is good n all others,

Do you mean High PH?

It looks like you have a PH of 8.0

The test labeled "PH" does not accurately measure PH above 7.2 and is off the scale.

Here is a photo of PH 8.0 The tests are in the order shown on the cards.  Notice that "PH" is blue like the 7.6 on the card.  That's because it's out of the test's range.  The "Wide Range" and "High PH" show an accurate reading of 8.0.